Finding the Third Proportional to 30,699 and 64,658.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,699 : 64,658.25 = 64,658.25 : x
2. Step 2: Convert to fraction form
   30,699/64,658.25 = 64,658.25/x
3. Step 3: Cross multiply
   30,699x = 64,658.25 × 64,658.25
4. Step 4: Simplify right side
   30,699x = 4,180,689,293.06
5. Step 5: Solve for x
   x = 4,180,689,293.06/30,699
6. Step 6: Final answer
   x = 136,183.24